Finding the Fourth Proportional to 126,380.88, 189,438.12 and 42,118.56

Step by Step Solution

1. Step 1: Write the proportion equation
   126,380.88 : 189,438.12 = 42,118.56 : x
2. Step 2: Convert to fraction form
   126,380.88/189,438.12 = 42,118.56/x
3. Step 3: Cross multiply
   126,380.88x = 189,438.12 × 42,118.56
4. Step 4: Simplify right side
   126,380.88x = 7,978,860,823.51
5. Step 5: Solve for x
   x = 7,978,860,823.51/126,380.88
6. Step 6: Final answer
   x = 63,133.45